1/*
2 * Copyright (C) 2015 Broadcom
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 */
8
9/**
10 * DOC: VC4 KMS
11 *
12 * This is the general code for implementing KMS mode setting that
13 * doesn't clearly associate with any of the other objects (plane,
14 * crtc, HDMI encoder).
15 */
16
17#include "drm_crtc.h"
18#include "drm_atomic_helper.h"
19#include "drm_crtc_helper.h"
20#include "drm_plane_helper.h"
21#include "drm_fb_cma_helper.h"
22#include "vc4_drv.h"
23
24static void vc4_output_poll_changed(struct drm_device *dev)
25{
26	struct vc4_dev *vc4 = to_vc4_dev(dev);
27
28	if (vc4->fbdev)
29		drm_fbdev_cma_hotplug_event(vc4->fbdev);
30}
31
32static const struct drm_mode_config_funcs vc4_mode_funcs = {
33	.output_poll_changed = vc4_output_poll_changed,
34	.atomic_check = drm_atomic_helper_check,
35	.atomic_commit = drm_atomic_helper_commit,
36	.fb_create = drm_fb_cma_create,
37};
38
39int vc4_kms_load(struct drm_device *dev)
40{
41	struct vc4_dev *vc4 = to_vc4_dev(dev);
42	int ret;
43
44	ret = drm_vblank_init(dev, dev->mode_config.num_crtc);
45	if (ret < 0) {
46		dev_err(dev->dev, "failed to initialize vblank\n");
47		return ret;
48	}
49
50	dev->mode_config.max_width = 2048;
51	dev->mode_config.max_height = 2048;
52	dev->mode_config.funcs = &vc4_mode_funcs;
53	dev->mode_config.preferred_depth = 24;
54	dev->vblank_disable_allowed = true;
55
56	drm_mode_config_reset(dev);
57
58	vc4->fbdev = drm_fbdev_cma_init(dev, 32,
59					dev->mode_config.num_crtc,
60					dev->mode_config.num_connector);
61	if (IS_ERR(vc4->fbdev))
62		vc4->fbdev = NULL;
63
64	drm_kms_helper_poll_init(dev);
65
66	return 0;
67}
68